University of Nebraska Omaha

About: University of Nebraska Omaha is a education organization based out in Omaha, Nebraska, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 4526 authors who have published 8905 publications receiving 213914 citations. The organization is also known as: UNO & University of Omaha.

Strain induced half-metal to semiconductor transition in GdN

Abstract: We investigate the electronic structure and magnetic properties of GdN as a function of unit cell volume. Based on the first-principles calculations of GdN, we observe that there is a transformation in the conduction properties associated with the volume increase: first from half-metallic to semimetallic, then ultimately to semiconducting. We show that applying stress can alter the carrier concentration as well as mobility of the holes and electrons in the majority spin channel. In addition, we found that the exchange parameters depend strongly on lattice constant, thus the Curie temperature of this system can be enhanced by applying stress or doping impurities.

Style composition in action research publication

Abstract: Examining action research publications in leading Information Systems journals as a particular genre of research communication, we develop the notion of style composition to understand how authors structure their arguments for a research contribution. We define style composition as the activity through which authors select, emphasize, and present elements of their research to establish premises, develop inferences, and present contributions in publications. Drawing on this general notion, we identify a set of styles that is characteristic of how IS action researchers compose their argument. Premise styles relate to the dual goals of action research through practical or theoretical positioning of the argument; inference styles combine insights from the problem-solving and the research cycles through inductive or deductive reasoning; and contribution styles focus on different types of contributions--experience report, field study, theoretical development, problemsolving method, and research method. Based on the considered sample, we analyze the styles adopted in selected publications and show that authors have favored certain styles while leaving others underexplored; further, we reveal important strengths and weaknesses in the composition of styles within the IS discipline. Based on these insights, we discuss how action research practices and writing can be improved, as well as how to further develop style compositions to support the publication of engaged scholarship research.

Disputes involving youth street gang members: Micro-social contexts

Abstract: This paper examines microsocial contexts of violent and nonviolent dispute-related incidents involving gang members. Data consist of reports of field observations of twelve black and eight white youth street gangs in Chicago between 1959 and 1962. Dispute-related incidents (N = 2,637) were classified according to three primary pretexts: normative or order violations, identity attacks and retaliation. Findings show that disputes associated with each of these generally unfolded consistently with expectations based on the extent to which status concerns were likely to be outweighed by such situational constraints as a close relationship between disputants and audience intervention. We suggest that understanding violence in the gang context will be enhanced greatly by further consideration of the microsocial level of explanation and linkages to its macro- and individual-level counterparts.

Voluntary Environmental Investment and Responsive Regulation

Abstract: Instances of corporate voluntary environmental investments have been rising in recent years. Motivations for such activities include corporate image building, regulatory preemption, and production cost savings. While some of these investments arise from industry attempts to set environmental standards where none currently exist, many investments seem to be aimed at reducing the costs of complying with existing regulations. Using a simple game-theoretic model, we investigate firm motivations for, and welfare consequences of, these types of voluntary investments by focusing on the role regulatory enforcement might play. We find that such investments unambiguously increase when an enforcement regulator acts as a Stackelberg follower (a regulatory structure we refer to as responsive regulation) in setting its monitoring and enforcement strategy. These additional investments may be socially undesirable, necessitating a restructuring of non-compliance penalties.